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US Patent: 78,867
Drop Hammer
Patentee:
James Duff (exact or similar names) - Peoria, Peoria County, IL

USPTO Classifications:
173/102, 173/118, 72/43

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 16, 1868

Patent Pictures:
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